chore: add VERSION file and bump-version.sh script

Co-authored-by: Cursor <cursoragent@cursor.com>

VERSION

@@ -0,0 +1 @@
+0.1.0

scripts/bump-version.sh

@@ -0,0 +1,55 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
+VERSION_FILE="$PROJECT_ROOT/VERSION"
+
+if [ $# -ge 1 ]; then
+  echo "$1" > "$VERSION_FILE"
+fi
+
+if [ ! -f "$VERSION_FILE" ]; then
+  echo "ERROR: VERSION file not found at $VERSION_FILE" >&2
+  exit 1
+fi
+
+VERSION=$(cat "$VERSION_FILE")
+
+# Sanitize: strip leading v/V, trim whitespace
+VERSION=$(echo "$VERSION" | sed 's/^[vV]//' | tr -d '[:space:]')
+
+# Validate semver (X.Y.Z)
+if ! echo "$VERSION" | grep -qE '^[0-9]+\.[0-9]+\.[0-9]+$'; then
+  echo "ERROR: '$VERSION' is not valid semver (expected X.Y.Z)" >&2
+  exit 1
+fi
+
+echo "Bumping to version $VERSION"
+
+# 1. package.json
+cd "$PROJECT_ROOT"
+npm pkg set "version=$VERSION" --json 2>/dev/null || npm pkg set "version=$VERSION"
+echo "  ✓ package.json"
+
+# 2. src-tauri/Cargo.toml — update [package] version (first version = line)
+sed -i '' "s/^version = \".*\"/version = \"$VERSION\"/" "$PROJECT_ROOT/src-tauri/Cargo.toml"
+echo "  ✓ src-tauri/Cargo.toml"
+
+# 3. src-tauri/tauri.conf.json
+node -e "
+  const fs = require('fs');
+  const path = '$PROJECT_ROOT/src-tauri/tauri.conf.json';
+  const conf = JSON.parse(fs.readFileSync(path, 'utf8'));
+  conf.version = '$VERSION';
+  fs.writeFileSync(path, JSON.stringify(conf, null, 2) + '\n');
+"
+echo "  ✓ src-tauri/tauri.conf.json"
+
+# 4. Sync Cargo.lock
+cd "$PROJECT_ROOT/src-tauri"
+cargo generate-lockfile 2>/dev/null
+echo "  ✓ src-tauri/Cargo.lock"
+
+echo ""
+echo "Done — all manifests set to $VERSION"